Carbureter.



H. A. MILLER.

GARBURETBR. APPLIOATION FILED JUNE 7, 1911.

1 ,O65,462, Patented June 24, 1913.

2 SHEETS-SHEET 1.

H. A. MILLER. CABBUBBTER.

APPLICATION FILED JUNE 1, 1911.

1,065,462. v Patented June 24, 1913.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

HARRY LIILLER, 0F LOS ANGELES, CALIFORNIA, ASSIGNOR T0 NE lW-MILLER LIANU- FACTURING COMPANY, OF LOS ANGELES. CALIFORNIA, A CORPORATION OF CALI- FORNIA.

CARBURETER.

Specification of Letters Patent.

Patented June 24, 1913.

Application filed June 7, 1911. Serial No. 631,861.

To all whom, it may concern: v

Be it known that I, HARRY A. MILLER, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Improvement in Carbureters, of which the following is a specifi cation.

This invention relates to improvements in carbureters, and relates particularly to means for operating the needle valve mechanically in combination with the throttle valve or independently from the throttle valve, when desired.

In a companion application of mine filed May 27, 1911, Serial No. 629,936, I have shown and described a carburcter in which the nozzle discharges into the carbureting chamber, a mixing chamber above the same, the walls of the mixing chamber having ports, and a. sliding sleeve on the interior of the mixing chamber connected with the throttle valve for controlling the admission of auxiliary air through said ports. The present invention embodies those features also, bu't'inclndes in addition thereto a device for opening theneedle valve, the said devicebeing automatically operated whenever the throttle valve is operated, and the said device also being capable of operation independently of the throttle valve, by means of a connection extending froin'said device to a point adjacent the steering wheel of the automobile.

In the drawings, Figure 1 is a side elevation in part section of the invention. showing the parts in position with the throttle and needle valve 'closed. Fig. 2 is a side" elevation of the upper portion of the carbureter taken at right angles to Fig. 1, showing the position of the parts when the carbureter is adjusted for running. Fig. 3 is a plan view with the side mechanism removed. Fig. 4 is a section on line ;r--.r* Fig. 3. Fig.

5 is a side elevation on a small scale of the carburetor and a part of the steering wheel, showing the connections therebetwecn. Fig. 6 is a section on line (0 -40 Fig. 5, on a larger scale. Fig. 7 is a side elevation of the sleeve support. Fig. 8 is a perspective view of the needle valve operating spring. Fig. 9 is a perspective in detail of the lever and cam for operating the needle valve operating spring. Fig. 10 is a plan view in detail of the throttle valve and bypass controlling valve, showing controlling valve opened to give the largest size'of bypass. Fig. 11 is a view similar to Fig. 10 showing the controlling valve closed. Fig. 12 is a perspective view of the roller carrying arm. Fig. 13 is a section on line 0c :v of Fig. 1. Fig. 14 is a vertical section of the upper portion of the'carbureter. Fig. 15 is a perspective of the sliding valve.

1 designates the carbureting chamber into which the nozzle 2 discharges.

3 is the needle valve extending at an angle and projecting through the side wall of the mixing chamber.

4 designates ports in the side walls of. the mixing chamber, and 5 is asliding sleeve within the mixing chamber for controlling the size of opening through said ports, or for entirely closing said ports, the sliding sleeve having a cross-bar 5 which is connected by a link 6 with the throttle valve 7, so that. the sliding sleeve operates in unison with the throttle valve. Then the throttle valve is closed, the sleeve closes the ports, and when the throttle valve opens the sleeve opens the ports a corresponding amount. 4

8 is the throttle valve shaft, andsecured thereon is a block 9 ca1rying a curved band 10, one end of which is engaged by a screw 11 by means of which the curve of the band 10 may be regulated.

A stud 152 is secured by a pin 12 in a lug l2 which is formed on the carbureter as shown in Fig. 1. Pivoted on the stud 12 is a head 13 from which projects a sleeve 14 in which is a sliding rod 15 on'the end of which is a roller 16 which bears against the band 10, a thumb nut 17 on the threaded end of the rod 1:": regulating the position of the roller 16.

The above described parts are substantially'similar to those shown in my companion application referred to.

Joni-nailed for rotation in the block 13 is a short shaft 13. to which is secured a flat still' T closing movement of the throttle valve depresses the spring 19, and closes the needle valve whil'e an opening movement of the throttle relieves pressure of cam 20 against spring 19 and permits needle valve to rise.

Also journaled on the stud 12 is a cam 20 having an arm 21, as shown in Fig. 2 and in detail in Fig. 9. A coil spring 22 has one end engaged by a head 22 on the shaft 12 and encircles the shaft '12 with its other end bent over the edge of the arm 21 which presses the arm.21 in a counter-clockwise direction, and the cam 20 depresses the spring 19 and closes the needle valve a corresponding amount, this action taking lace independently of the adjustment 0 the throttle valve, the latter not being moved during this adjustment. The arm 21 has no connection with sleeve 14, the arm being pivoted on pin 12, and when rocked the arm 21 operates its cam 20 to depress the flat s ring 19, the sleeve 14 'remaining stat "diar l A cable 23 extends from the arm 21 through a tube 24 which extends to a point adjacent the steering post 25, and the end'of the cable 23 is secured to a reel 26 which is operated by handle 27 to wind up the cable and operate .the arm 21. A disk 28 is pro vided with shallow depressions 29 which act to detachably hold a sliding spring pressed pawl 30 sliding in the handle 27, as shown in ig. 6, and thus detachably lock the handle 27 in position. v

31 is an external sleeve having ports 32 which are adapted to register with ports 33 in the 'walls of the mixing chamber. This sleeve 31 is intended to be operated manually and set in the 'desiredposition.

34 is a tubular valve which extends tangent-ially through the upper port of the 'mixdetermined by ad usting the valve 34.

It with the throttle open, the needle valve permits more gasolene to pass than is proper for operation under the conditions present, as for example, in running down hill, or at a very high speed, the cable is operated to tilt the arms 21and depress the needle valve, thereby reducing the amount of gasolene in proportion to the air admitted, thereby producing the most economical mixture for fast speeds, and in running down hill the needle valve will be entirely closed and thus no gasolene wasted. It is to be noted that it is possible to close the needle valve without closing the outer sleeve 31. This is an advantage over the structure shown in my companion application,.in that the volume of air which is allowed to pass into the carbureter is not reduced when the needle valve is adjusted toward .eeee position. This is particularly advantageous 1n running at'a high altitude or in an atmosphere having very dry air. Under such conditions the air is so light that the full volume of it should be admitted, which the present construction enables.

\Vhat I claim is:

1. Ina carbureter, a carbureting chamber,

a nozzle discharging into the carbureting chamber, a needle valve for said nozzle, a throttle valve, means operated by the throttle valve for operating the needle valve therewith, said means being movable independently of said throttle valirqjlthe side walls of said'oarburet ing chamber having ports, a sliding sleeve in. the carbureting chamber for controllin said ports, and a connection between sai sliding sleeve and the throttle valve whereby said sleeve is operated with thethrottle valve.

2. In a carbureter, a carbureting chamber, a nozzle dischargin into thecarbureting chamber, a needle I alve for said nozzle,a throttle valve, a pivotedhead, a spring arm pivoted in said head, and bearing against said needle valve, means operated by the throttle valve for actuating said arm, and means for actuating said arm independently of the last means.

3. In a carbureter, a carbureting chamber, a nozzle discharging into the carbureting chamber, a needle valve for said nozzle, a

throttle valve, a pivoted head, a spring arm pivoted in said head and bearing against said needle valve, and means for actuating said arm independently of the last means, comprising a cam bearing against said arm, and a lever projecting from said cam.

.4. In a carbureter, a carbureting chamber, a nozzle discharging into the carburet-ing chamber, a needle valve for said nozzle, a throttle valve, a pivoted head, an arm, pivoted in saidhead and bearing against said needle valve, and means-for actuating said arm independently of the last means, comprising a cam bearing against said arm, and a lever projecting from said cam, a mixing chamber having ports in its side walls, a sliding sleeve in the mixing chamber for controlling said ports, a connection from 7 said sliding'sleeve to the throttle valve.

5. In a carburetor, a carbureting chamber, a nozzle discharging into the carbureting chamber, a needle valve for said nozzle, a throttle valve, a pivoted head, an arm pivoted in said head, and bearing against said needle valve, and means for actuating said arm independently of the last means, comprising a cam bearing against said arm, and a lever projecting from said cam, a mixing chamber having ports in its side walls, a sliding sleeve in the mixing chamber for controlling said ports, a connection from said sliding sleeve to the throttle valve, a tutangentially throu h andintersecting V e the throttle valve and the throta nozzle discharging into the carburetingchamber, a n valve for said nozzle, a

throttle valve, a throttle valve shaft, a block on the throttle valve shaft, a cam com rising a curved, flexible hand, one end of w ich is attached to said block, an ad'u'sting screw through said block engaging t of the flexible band, a pivoted arm, arm carried thereb and bearing a ainst the needle valve, a r01 er carried on t e end of the pivoted arm, said flexible band bearing against said roller.

7. In a carbureter, a carbureting chamber, a nozzle discharging into the carbureting chamber, a needle valve for said nozzle, a throttle valve, a throttle valve shaft, a block on the throttle valve shaft, a cam com rising a curved, flexible hand, one end of w ich is attached to said block, an adjustin screw through said block engaging the ot er end of the flexible band, a pivoted arm, a spring arm carried thereb and bearing against the needle valve, a rol er carried on the end of a spring jecting e other end the pivoted arm, said flexible arm bearing against said roller, said roller bearing against said spring arm, a cam bearing against said spring arm, and a lever profrom said cam for operating the latter to move the sprihg arm and ad]ust the needle valve independently ofthe first mentioned pivoted arm. 8. In a carbureter, a carbureting chamber, a nozzle discharging into the carbureting chamber, a needle valve for said nozzle, a throttle valve, a ivoted head, a spring arm pivoted in said d and bearing agamst said needle valve, and means for actuating said spring arm independently of the last means, comprising adcam lbearing against sai spring arm, an a ever prqecti from said cam, an arm carried on said hedli a cam for adjusting said latter arm, a In on said latter arm, and a screw through sai lug ada ted to bear against said spring arm for hol ing the spring arm in a set position. In testimon whereof, I have hereunto set my hand at Angeles, California, this 26 day of May 1911.

HARRY A. MILLER. In presence of-- a G. T. I-Lscnmr, Gnmrs RUssnnL.

, --l--" copies of this patent may be obtained for live cents each, by addressing the Oommlsloner of Patents, Washington, D. 0. 

